Loom-dobby.



A. A. GORDON, JB.

LOOM DOBBY.

APPLICATION FILED ROY. 6, 1906.

A. A. GORDON, JR.

LOOM DOBBY.

APPLICATION FILED Nov. 6, 1906.

ZSHEETS-SEEET 2.

Patented Oct. 5, 1909.

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UNITED STATES PATENT FFICE.

ALBERT A. CORDON, JR., OE WORCESTER, MASSACHUSETTS, AssICNOR To CROMPTONa KNowLES LOOM WORKS, A CORPORATION OE MASSACHUSETTS.

LOOM-BOBBY.

935,652. Specification 0f Letters Patent. Patented Oct. 5, 1909.

Application led November 6, 1906. Serial No. 342,240.

To all whom 'it may concern:

Be it known that I, ALBERT A. GORDON, J r., a citizen of the UnitedStates, residing at lVorcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inLoom- Dobbies, of which the following is a specifiand the indicatorlevers hooks, and vice versa.

I have only shown in the drawings dctached parts of a dobby of the classreferred to, embodying my improvements, Suliicient to enable thoseskilled in the art to understand the construction and operation thereof.

or fingers for thc l cation. l' Referring to the drawings :hFigure l isa My invention relates to a loom dobby, partial end view of a twocylinder dobby and particularly to that class of dobbies embodying myimprovements, looking in the which have two pattern cylinders having adirection of arrow a, Fig. 2; Some of the rotary motion in a fixedplane, and adapted parts are broken away, and other parts are to beoperated successively, one pattern cylinder during the weaving of oneportion of the fabric, and the other pattern cylinder during the weavingof another portion of the fabric.

The object of my invention is to improve upon the construction of twocylinder dobbies of the class referred to, and more particularly toprovide a dobby having two pattern cylinders, and only one set ofindicator levers or lingers, to operate the hooks moved by the lifterblades, and direct connections intermediate said two cylinders and theindicator levers or fingers, to cause the movement of said levers orfingers from either pattern cylinder, as desired. When one set ofconnections, between one pattern cylinder and the indicator levers orfingers, are in operative position, the other set of connections is ininoperative position, and Vice versa.

In the preferred construction of my improvements which I have shown inthe drawings, I provide a movable frame, over the two pattern cylinders,and intermediate the pattern cylinders, and the indicator levers orfingers which operate the hooks moved by the lifter blades, and Icombine with said frame two sets of levers or fingers, termed l cylinderlingers, one set operated by one pattern cylinder, and the other set bythe other pattern cylinder, and two fingers, one finger of each setadapted to engage and move the same indicator lever or linger.

I provide mechanism, the operation of I which is controlled by a patternchain, to I move one set of fingers into operative posil tion, relativeto its pattern cylinder and the l' not Shown in this ligure. Fig. 2 isan edge or side view of the parts shown in Fig. l, looking in thedirection of arrow l), same gure. Fig. 3 is a section, on line 3, 3, Fig. l, looking in the direction of arrow c, same ligure. Fig. t shows,on an enlarged scale, an end View of one cylinder shaft, and disk, andgear, det-ached, looking in the direction of arrow d, F ig. 5. Fig. is asection, on line 5, 5, Fig. 4, looking in the direction of arrow e, sameligure, and showing in full lines the sleeve carrying a worm and clutchmember. Fig. 6 is, on an enlarged scale, a section, on line 6, 6, Fig.2, looking in the direction of arrow f, same ligure; this ligure showsthe pattern chain on each Cylinder, and also the lifter blade and hooks,and the connections to the upper hooks, and, Fig. 7 corresponds to Fig.6, but shows some of the parts in a different position.

In the accompanying drawings, l is a detached portion of one end or sideof the dobby frame, having a horizontally extending longitudinal slot oropening l therein, and the lower lifter bar 2, connected through a linkor connector 3 with the rocking lever 4. The lower hooks 5, and theupper hooks not shown, through connectors 6, are adapted to be loweredand raised, to be in a position to be engaged by the lifter bar 2, or tobe in a position to be out of the path of the lifter bar Q., through themovement of the indicaa transverse rod S, in the usual and well knownway. The outer ends of the lingers 7 extend through a grid 9 attached tothe dobby frame, and the lower surface of the lingers 7 have a broadfoot or engaging surface 7 thereon.

All of the above mentioned parts may be indicator levers or ngers forthe hooks, and to move the other set of lingers out ofoperative positionrelative to its pattern cylinder,

tor levers or lingers 7, pivotally mounted on of the usual and wellknown construction in the class of dobbies referred to.

I will now describe my improvements.

There are two pattern cylinders 10, and 11, each carrying a patternsurface, in this instance made up of wooden bars 12 linked together, andcarrying pattern pins 13. Each pattern cylinder 10, and 11, is fast on arotary shaft 10, and 11, mounted in suitable bearings 1 attached to theend frame 1, see Fig. 2, and having a rotary movement in a fixed plane.

On the shaft 14, see Fig. 3, mounted in suitable bearings 14 on hangersconnected to the end frame, is fast in this instance a movable, andpreferably a rocking frame 16, consisting of two end bars connected byrods 17. The rods 17 in this instance extend above the two cylinders 10,and 11, and upon the outer sides of said cylinders. On the rods 17 areloosely mounted the outer' ends or hubs 18 of the cylinder fingers 18.

There are two sets of cylinder fingers 18, one set for each cylinder,and one finger for each row of pattern pins 13, in each pat-tern chain12. rlhe inner engaging ends of the cylinder fingers 18 are preferablyoffset and lap by each other, as shown, and the inner end of each pairof cylinder' fingers, one finger for one cylinder, and one finger forthe other cylinder, is adapted to engage the same indicator finger 7, onthe broadened surface or foot 7 thereon.

Then the cylinder fingers 18 are in their lowered position, they rest onthe shaft 14.

The rocking motion of the frame 16 in each direction, is in thisinstance limited by set screws 19 adjustable in a stationary part of thedobby frame, not shown, see Figs. G, and 7. A rocking motion iscommunicated to the frame 16, according to the desired movement of theindicator fingers 7, or the pattern to be woven, in this instancethrough a pattern surface 20, in this instance made up of bars linkedtogether, and carrying rolls 21 and tubes 22, in the usual way, andmounted on a pattern barrel or cylinder 23 fast on a driven shaft 24,operated from some driven part of the loom. The pattern surface or chain2O operates a pattern lever 25, which is pivoted on a stud Q6, see Fig.1, and has an extension 25, which is connected by an adjustable link 27,with a lever 28, having its hub 28 fast on the shaft 14.

The rocking of the shaft 14 and of the frame 16 in one direction, or theother, moves one set of cylinder fingers 18 out of operative position,relatively to the pattern cylinder operating said fingers, andsimultaneously moves the other set of cylinder fingers 18 into operativeposition relatively to the pattern cylinder operating said fingers, seeFigs. G, and 7 In this instance the hub 28 of the arm 28 has a stud 29extending up therefrom, which is engaged by an elongated on the shaft 10slot 30 in an arm 30, the hub 30 of which is loosely mounted on a stud31 on a stationary stand 32, see Fig. 3. The hub 30. has extending outfrom opposite sides thereof arms or levers 33, each carrying a stud 33adapted to extend into an annular groove 34 'in a sleeve or collar 34,forming a clutch member, and loosely mounted on the extended hub'38 ofgears 38, which gears are loose and the shaft 11 of the patterncylinders 10and 11. One of the hubs 38 has a worm gear 35 fast thereon,which is adapted to mesh with and be driven by a worm 3G on an uprightdriven shaft 37, see Figs. 1, and 2. Each gear 38 has an opening 38therein.

Fast on the end of each pattern cylinder shaft 10 and 11 is a disk 39,forming a clutch member, and having four openings 39 therein. Eachsleeve or collar 34 has a lug or extension 34 thereon, which Vextendsthrough the opening 38 in the gear 38, and in the longitudinal movementof the sleeve or collar 34 on the hub 38 of a gear 38, is adapted toenter one of the openings 39 in the disk 39 fast on the shaft 10, or 11,to connect the gear 38 with the shaft, and cause the revolution thereofand of the pattern cylinder fast thereon.

From the above description in connection with the drawings the operation'of my improvements will be readily understood by those skilled in theart.

Vhen in the revolution of the pattern chain 20, a roll 21 comes underthe foot of the pattern lever 25, through the extension 25, connector27, and arm 28, the shaft 14 is rocked, and also the frame 1G, to movedown the outer side or edge of said frame, as shown in Fig. 6, to causethe cylinder fingers 18, extending over the pattern cylinder 10 to'bemoved into operative position relative to said cylinder, and at -thesame time to cause the cylinder fingers 18 of the pattern cylinder 11 tobe moved out of operative position, as shown in Fig. 6.

rl`he rocking movement of the shaft 14, through the lever 30 and thearms 33 connected therewith, moves one of the clutch sleeves or collars34, (the one at the right in Fig. 2,) to cause the lug or projection 34thereon to enter one of the openings 39 in the disk 39, and clutch orattach the gear 38 to the cylinder shaft 10 of the pattern cylinder 10,to cause the revolution of said shaft and cylinder, through therevolution of the gear 38. At the same time the other clutch sleeve orcollar 34 is simultaneously moved, to withdraw the lug or projection 34thereon from engagement with the disk 39 fast on the shaft 11 of thepattern cylinder 11, leaving said cylinder at rest, but the gear 38,loose on said shaft 11, is ro tated through the worm gear 35, meshingwith the worm 36 on the upright driven shaft 37, see Figs. 1, and 3, andsaid gear 38 meshing with the other gear 3S on the pattern cylindershaft 10', causes the revolution of said cylinder shaft and patterncylinder 10 thereon.

IVhen in the rotation of the pattern chain 2O a tube or blank 22 passesunder the foot 25' of the pattern lever 25, the pattern lever will drop,and through the action of the spring 40, Figs. 2, and 3, connected withthe frame 1G, said frame will be moved or rocked in the oppositedirection, to move out of operative position the cylinder lingers 18 ofthe pattern cylinder 10, and move into operative position the cylinderfingers 18 of the pattern cylinder 11, as shown in Fig. 7, and throughthe movement of the lever 30 and arms 33, the clutch sleeve 34 at theright in Fig. 1, has its lug or projection 34 moved out of engagementwith the disk 30, fast on the pattern cylinder shaft 10', leaving thegear 3S loose on said shaft, and said shaft and the pattern cylinder 10stationary; at the same time the clutch sleeve 34 on the other cylindershaft 11 has its lug or projection 34 moved into engagement with thedisk 39 fast on said shaft, to cause the gear 3S, operated through theworms 35 and 3G, and shaft 37, to rotate the cylinder shaft 11 and thepattern cylinder 11, to operate the cylinder fingers 18 of said cylinder11, and cause them to operate the indicator levers or fingers 7, asshown in Fig. 7

rl`he advantages of my improvements will be readily appreciated by thoseskilled in the art. They are of simple construction and operation, andare adapted to be applied to the ordinary two cylinder dobbies, and bymeans of my improvements only one set of hook indicator levers, orfingers are employed, the same as in the case of a single cylinderdobby.

It will be understood that the details of construction of myimprovements may be varied if desired.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is y 1. In a loom dobby, the combination withtwo pattern cylinders, each carrying a pattern surface, and indicatorlevers or fingers for operating lifter bar hooks, of a movable frame andtwo sets of cylinder fingers mounted on said frame, a pair of cylinderfingers, one finger for each cylinder, adapted to engage and move thesame indicator lever or finger, and said framey adapted to be moved, tocarry one set of cylinder fingers into an inoperative position relativeto its pattern cylinder, and the other set of cylinder fingers into anoperative position relative to its pattern surface.

2. In a loom dobby, the combination with two pattern cylinders, eachcarrying a pattern surface, and indicator levers or fingers foroperating lifter bar hooks, of a movable frame, and two sets of cylinderfingers mounted on said frame, a pair of cylinder fingers, one fingerfor each cylinder, adapted to engage and move the same indicator leveror finger, and said frame adapted to be moved, to carry one set ofcylinder fingers into an inoperative position relative to its patterncylinder, and the other set of cylinder fingers into an operativeposition relative to its pattern cylinder, and means for moving saidframe at predetermined times, and stopping one pattern cylinder andputting into operation the other pattern cylinder.

3. In a loom dobby, the combination with two pattern cylinders carryingpattern surfaces, and indicator levers or fingers for moving' the lifterbar hooks, of a rocking frame carrying two sets of cylinder fingersarranged opposite to each other and pivotally mounted, and the innerfree ends of each pair of cylinder fingers, one finger for eachcylinder, adapted to engage and move the same indicator lever or finger,of means for rocking said frame at predetermined times, and moving oneset of fingers into an inoperative position relative to its patterncylinder, to be heid in said position, and the other set of fingers intoan operative position relative to its pattern cylinder, and means forputting into operation the cylinder for the fingers in operativeposition, and putting out of operation the cylinder for the fingers inan inoperative position.

4. In a loom dobby, the combination with two pattern cylinders carryingpattern surfaces, and indicator levers or fingers for moving the lifterbar hooks, of a rocking frame carrying two sets of cylinder fingersarranged opposite to each other, and pivotally mounted, and the innerfree ends of each pair of cylinder fingers, one finger for eachcylinder, adapted to engage and move the same indicator lever or finger,of means for rocking said frame at predetermined times, and moving oneset of fingers into an inoperative position relative to its patterncylinder, to be held in said position, and the other .set of fingersinto an operative position relative to its pattern cylinder, and meansfor putting into operation the cylinder for the fingers in operativeposition, and putt-ing out of operation the cylinder for the fingers inan inoperative position, said means consisting of a gear on eachcylinder shaft, and clutch mechanism for clutching one gear to itsshaft, and unclutching the other gear from its shaft, and drivingmechanism for rotating said gears.

5. In a` loom dobby, the combination with two pattern cylinders having arotary movement in a fixed plane, and each cylinder carrying a patternsurface, and a worm drive for said cylinders, and indicator levers foroperating lifter bar hooks, of cylinder fingers or levers for eachcylinder, adapted to operate the same indicator lever or finger to movethe lifter bar hooks.

6. In a loom. (lobby, the combination with two pattern cylinders, havinga rotary movement in a iixed plane, and each carrying a pattern surface,and a Worm drive for said Cylinders, and indicator levers for operatinglifter bar hooks, of two sets of cylinder {ingers or levers, one iingerof each set adapted 10 to operate the saine indicator lever or linger tolnove a lifter bar hook, and means for supporting` said Cylinder lingersand moving them into and out of operative position.

ALBERT A. GORDON, JR. Titnesses J. C. DEWEY, TIAAS.

